From 272cff5d0385c5ab9f729fe5ff9014fc4c205c79 Mon Sep 17 00:00:00 2001
From: projectmoon <projectmoon@agnos.is>
Date: Thu, 23 Mar 2023 20:28:59 +0100
Subject: [PATCH] sys-kernel/libre-kernel: fallback URI for kernel releases,
 smarter discovery of gentoo patches, drop non-amd64 arches.

---
 .../libre-kernel-5.15.94-r1.ebuild            | 147 ++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 sys-kernel/libre-kernel/libre-kernel-5.15.94-r1.ebuild

diff --git a/sys-kernel/libre-kernel/libre-kernel-5.15.94-r1.ebuild b/sys-kernel/libre-kernel/libre-kernel-5.15.94-r1.ebuild
new file mode 100644
index 0000000..d16f33b
--- /dev/null
+++ b/sys-kernel/libre-kernel/libre-kernel-5.15.94-r1.ebuild
@@ -0,0 +1,147 @@
+# Copyright 2020-2023 Gentoo Authors, projectmoon
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit kernel-build verify-sig
+
+BASE_VER="$(ver_cut 1).$(ver_cut 2).$(ver_cut 3)"
+RESTRICT="mirror"
+
+GENPATCHES_P=genpatches-${PV%.*}-$(( ${PV##*.} + 4 ))
+CONFIG_VER=5.15.19
+CONFIG_HASH=ec69da7a42b5b7c3da91572ef22097b069ddbd01
+GENTOO_CONFIG_VER=g6
+
+DESCRIPTION="GNU Linux-libre kernel built from upstream sources"
+HOMEPAGE="https://www.fsfla.org/ikiwiki/selibre/linux-libre/"
+SRC_URI+="
+	https://git.agnos.is/projectmoon/projectmoon-overlay-files/media/branch/main/sys-kernel/libre-kernel/linux-libre-${BASE_VER}-gnu.tar.xz
+	https://linux-libre.fsfla.org/pub/linux-libre/releases/${BASE_VER}-gnu/linux-libre-${BASE_VER}-gnu.tar.xz
+	https://dev.gentoo.org/~mpagano/dist/genpatches/${GENPATCHES_P}.base.tar.xz
+	https://dev.gentoo.org/~mpagano/dist/genpatches/${GENPATCHES_P}.extras.tar.xz
+	https://github.com/projg2/gentoo-kernel-config/archive/${GENTOO_CONFIG_VER}.tar.gz
+		-> gentoo-kernel-config-${GENTOO_CONFIG_VER}.tar.gz
+	verify-sig? (
+		https://git.agnos.is/projectmoon/projectmoon-overlay-files/media/branch/main/sys-kernel/libre-kernel/linux-libre-${BASE_VER}-gnu.tar.xz.sign
+	)
+	amd64? (
+		https://raw.githubusercontent.com/projg2/fedora-kernel-config-for-gentoo/${CONFIG_VER}/kernel-x86_64-fedora.config
+			-> kernel-x86_64-fedora.config.${CONFIG_VER}
+	)
+"
+
+# Workdir is named linux-PV.
+MY_P=linux-${PV}
+S=${WORKDIR}/${MY_P}
+
+LICENSE="GPL-2"
+KEYWORDS="amd64"
+IUSE="debug +gentoo"
+
+BDEPEND="
+	debug? ( dev-util/pahole )
+	verify-sig? ( sec-keys/openpgp-keys-linux-libre )
+"
+PDEPEND="
+	>=virtual/dist-kernel-${PV}
+"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=${BROOT}/usr/share/openpgp-keys/linux-libre.asc
+
+pkg_pretend() {
+	if has_version -d sys-kernel/linux-firmware[redistributable]; then
+		ewarn "sys-kernel/linux-firmware was found installed on your system,"
+		ewarn "but it is configured to install non-Free firmware files."
+		ewarn "The non-Free firmware files may be required for some hardware"
+		ewarn "work. The Linux-libre kernel cannot load non-Free firmware."
+		ewarn "To install only the Free firmware, set the -redistributable"
+		ewarn "USE flag on sys-kernel/linux-firmware."
+
+		if use initramfs; then
+			elog
+			elog "If you decide to change or remove linux-firmware later, you"
+			elog "can rebuild the initramfs via issuing a command equivalent to:"
+			elog
+			elog "    emerge --config ${CATEGORY}/${PN}:${SLOT}"
+		fi
+	else
+		if ! has_version -d sys-kernel/linux-firmware; then
+			ewarn "sys-kernel/linux-firmware[-redistributable] not found installed"
+			ewarn "on your system. This package provides various firmware files that"
+			ewarn "may be needed for your hardware to work.  If in doubt, it is recommended"
+			ewarn "to pause or abort the build process and install it before"
+			ewarn "resuming."
+
+			if use initramfs; then
+				elog
+				elog "If you decide to install linux-firmware later, you can rebuild"
+				elog "the initramfs via issuing a command equivalent to:"
+				elog
+				elog "    emerge --config ${CATEGORY}/${PN}:${SLOT}"
+			fi
+		fi
+	fi
+}
+
+src_unpack() {
+	if use verify-sig; then
+		FILE="${DISTDIR}"/linux-libre-${PV}-gnu.tar.xz
+		SIGFILE="${DISTDIR}"/linux-libre-${PV}-gnu.tar.xz.sign
+		verify-sig_verify_detached $FILE $SIGFILE
+	fi
+
+	default
+}
+
+src_prepare() {
+	local PATCHES
+	if use gentoo; then
+		# Fiters out the kernel incremenetal version upgrade patches,
+		# leaving only the Gentoo bug fix/functionality changes. The
+		# regex removes any patches starting with 10XX to 14XX.
+		MY_PATCHES=$(find "${WORKDIR}"/*.patch -printf "%f\n" | grep -v -E -e '^1[01234][[:digit:]][[:digit:]]_.+.patch')
+		PATCHES=$(echo "$MY_PATCHES" | sed 's|^|'"${WORKDIR}/"'|g')
+	else
+		# If no patches are to be applied, apply only the config changes
+		# for a Gentoo installation, as this does not change any actual
+		# Kernel functionality.
+		PATCHES="${WORKDIR}/4567_distro-Gentoo-Kconfig.patch"
+	fi
+
+	default
+
+	local biendian=false
+
+	# prepare the default config
+	case ${ARCH} in
+		amd64)
+			cp "${DISTDIR}/kernel-x86_64-fedora.config.${CONFIG_VER}" .config || die
+			;;
+		*)
+			die "Unsupported arch ${ARCH}"
+			;;
+	esac
+
+	sed -i 's/EXTRAVERSION = -gnu/EXTRAVERSION = /' "${S}"/Makefile || \
+		die 'could not remove EXTRAVERSION'
+
+	local myversion="-gnu-dist"
+	echo "CONFIG_LOCALVERSION=\"${myversion}\"" > "${T}"/version.config || die
+	local dist_conf_path="${WORKDIR}/gentoo-kernel-config-${GENTOO_CONFIG_VER}"
+
+	local merge_configs=(
+		"${T}"/version.config
+		"${dist_conf_path}"/base.config
+	)
+	use debug || merge_configs+=(
+		"${dist_conf_path}"/no-debug.config
+	)
+
+	# this covers ppc64 and aarch64_be only for now
+	if [[ ${biendian} == true && $(tc-endian) == big ]]; then
+		merge_configs+=( "${dist_conf_path}/big-endian.config" )
+	fi
+
+	kernel-build_merge_configs "${merge_configs[@]}"
+}